Improvement in vapor-stoves



S. CHILD, )n Vapor Stove.

Patented Aug. 21, 1866.

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UNITED STATES PATENT OEErcE.

SAMUEL CHILD, JR., OF BALTIMORE, MARYLAND.

IMPROVEMENT IN VAPOR-STOVES.

Specification forming part of LcttersPatent No. 57,2SS, dated August 21, 1566.

To all whom it may concern:

Be it known that I, SAMUEL CHILD, Jr., of Baltimore, in the county of Baltimore and State of Maryland, have invented certain new and useful improvements in Vapor-Stoves; and I hereby declare the following to be a full, clear, and exact description of the same, reference being` had to the accompanying drawing, in which is represented alongitudinal section of that part of the stove to which my improvements are applied. D

My invention relates to that class of stoves in which petroleum, naphtha, or other similar volatile iuid, when vaporized, is employed as a heating agent. In these stoves, as is well` known, the fluid is, by means of hydrostatic pressure, forced through pipes leading from a Huid-reservoir into a retort or heating-chamber, where it becomes vaporized, and in rthis state issues from a burner or jet formed in the top ofthe retort.

In Letters Patent heretofore granted to me I have described a method whereby the supply of inid to the retort is regulated by locating the valve or other suitable device used for this purpose at or near the point Where the fluid enters the retort. The advantages possessed by an apparatus thus constructed over the apparatus ordinarily employed in vaporstoves are fully set forth in the Letters Patent above referred to, and need not be repeated here.

My present invention more particularly relates to improved arrangements of parts for carrying the above-mentioned method into effeet; and it consists substantially' in the combination, with the retort-pipe and vaporizingchamber of a vapor-stove, of a tubular valve under such an arrangement that the hollowr valve-rod by which the supply of uid to the vaporizing-chamber is regulated shall also form the medium through which the liquid is conducted into the said chamber.

To enable others skilled in the artto understand and use my invention, I will now, by reference to the accompanying drawing, proceed to describe the manner in which the same is or may be carried into effect.

The parts of the stove to which my improvements are applied consist ofthe retort-pipe A and retort or vaporizing-chamber B. The retort has screwed in its top a cap, C, in which an orifice or burner, c, is formed to permit the escape of the gas generated in theretort. To Y the top of thev cap are secured conductors D, which support a heater-cap, E.

The end of the retol t. B is secured on the retort-pipe A by means of a screw, which engages with a corresponding screw on the end of the retort-pipe. An elbowjoint, I?, is attached to the rear end of the retort-pipe, in the top of which the upright pipe which leads from the duid-reservoir is screwed at G. The end of the joint F is extended back on the prolongation of the retort-pipe A, and is cored atf, so as to form a bearing for the valve-rod, about to be described.

The device for regulating the flow of the petroleum or other' fluid from the reservoir into the retort B consists of a tubular valve rod or stem, a. This rod may be made hollow throughont its whole length, as shown in the drawing, or, if preferred, that part of it in rear of the point where the iiuid enters the retort-pipe from the reservoir-pude can be left solid.

Small holes b b are formed in the tubular stem a, through which the iluid in the retortpipe, by the pressure induced by the column of fluid in the upright reservoir-pipe, is made to enter the interior ot' the stem. These holes may be formed in the tubular rod at any point Within the retort-pipe, and they may vary in number, although I have found that the two holes shown in the drawing are sufficient for all practical purposes.

In that end of the retort-pipe A which is secured to the retort B is tightly fastened a plug or stopper, d. This plug is cored so that its interior diameter will correspond with the diameter of the valve-rod, and a screw-thread, m, is cut or turned upon its interior surface, which tits a similar thread, y, formed `on the front end of the valve-rod a. The valve-rod, which is'thus supported in bearings f and d at its rear and front ends, extends a suitable distance beyond the plug d into the retort B, so that the iluid which enters through the holes b b is free to flow through the tubular rod and drop from its open end into the retort.

The supply of oil to the retort can be stopped at pleasure by revolving the rod a in its bearings by means of the handle m, attached to that end of the rod which extends out through the elbow-jointF. When this handle is turned to the right the valve-rod is carried forward by means of the screw q2, which engages with the screw y until its front end is pressed firmly against the front of the chamber B at s, closing the opening in its end and preventing the further tloW of the oil into the retort.

Vof the Vtubular rod a, from Which the tluid e11- ters the retort, is also used as a valve for regulating or cutting off the supply of fluid, the front of the \\'aporizingchamber forming the valve-seat.

When the apparatus is used the fluid enters the retort-pipe at G, and, being prevented by the plug or stopper d from entering the retort directly from the retort-pipe, makes its way through the holes b b into the tubular valverod a. If the end of the rod Within the ret-Orts be open, as reprrsented in the drawing, the uid flows through the rod and enters the retort, Where it is vaporized and discharged through the orifice or burner c. When it is desired to stop the further generation ot' the gas the handle m is turned so as to press the front end of the valve-rod irmly and tightly against the valve-seat s. By this means the fluid is kept Within thel tubular rod, and the supply of fluid being thus cut oli', the llame from the burner c is almost instantaneously extinguished.

The valve-seat s may project out into the vaporizing-chamber any desired distance; kbut I have found it best to construct it as shown in the drawing. y

A cap, 19, within which is a metal Washer, 1^, with packing of suitable material for making a tight joint, is screwed over the end of the elbow-joint F, from which the rodprojects.

Having described my invention and the manner in which the same is or may be carried into effect, what I claim, and desire to secure by Letters Patent, is-

The combination, with the retort-pipe and heating-chamber of a vapor-stove, of the tubular valverod operated upon the axis of. the said retort-pipe, as described, under such an ar rangement that the said rod, while regulating the supply of luid to the heating-chamber, shall also constitute the medium through which the fluid is conducted into the said chamber, substaptially as herein shoWn and set forth.

` In testimony whereof I have signed my name to this specication before two subscribing witnesses.

sAML. cHiLD, JR. 

